Results 21 to 30 of about 4,389 (169)
Energies, 2021 This study numerically investigates the beneficial effects of positive pre-swirl on the aerodynamic performance and internal flow field in a centrifugal compressor stage with variable inlet guide vanes (VIGVs) at low mass flow rates.
Shuai Li +4 more
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Swirl-Bypass Nozzle for CO2 Two-Phase Ejectors: Numerical Design Exploration
Energies, 2022 In this work, a novel ejector design concept of a swirl-bypass nozzle is proposed to improve off-design performance of CO2 two-phase ejectors. The swirl-bypass nozzle allows part of the flow to bypass into the ejector mixing chamber to generate swirl ...
Knut Emil Ringstad +3 more
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Simulation of the Internal Flow of the High-Pressure Swirl Injector
Journal of Thermal Science and Technology, 2009 The simulation of the internal flow of a kind of high-pressure swirl injector was carried out with multiphase and cavitation models basing on the movement mesh. The spray was also simulated with the result of the internal flow simulation.
Lei FU, Tsuneaki ISHIMA, Wu-qiang LONG
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Preliminary numerical study of single bubble dynamics in swirl flow using volume of fluid method
Nuclear Engineering and Technology, 2021 Spacer grid with mixing vane had been widely used in nuclear reactor core. One of the main feather of spacer grid with mixing vane was that strong swirl flow was formed after the spacer grid.
Zhongchun Li +6 more
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Effect of pre-swirl on gas–liquid two-phase flow characteristics in a helical axial-flow pump [PDF]
AIP AdvancesIn helical axial-flow pumps for gas–liquid multiphase transport, unsteady flow induced by the interaction between the trailing edge of the guide vanes and the impeller inlet often deteriorates the hydraulic performance.
Wei Han +7 more
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On Flow Reversal in Turbulent Swirling Flow
Journal of the Physical Society of Japan, 2003 Summary: A turbulent swirling flow is studied with the aid of a variational method. The mean-flow field is expressed by the mean vorticity proportional to its curl. The total axial flux and total helicity per unit length are introduced to characterize the swirling flow, and the condition for the reversal of the axial flow near the center of flow is ...
Itoh, Kimitaka +3 more
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Experimental study of hydrodynamic performances of pre-swirl pumpjet propeller
Xibei Gongye Daxue Xuebao, 2023 A pre-swirl pumpjet propeller(PJP) is widely used in the new generation of quiet submarines all over the world, although the experimental study of its hydrodynamic performances is still rare. This paper carries out experimental tests of the pre-swirl PJP
QIN Denghui +4 more
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Parametric Study of High-Efficiency and Low-Emission Gas Burners
Advances in Materials Science and Engineering, 2013 The objective of this study is to investigate the influence of three significant parameters, namely, swirl flow, loading height, and semi-confined combustion flame, on thermal efficiency and CO emissions of a swirl flow gas burner.
Shuhn-Shyurng Hou, Ching-Hung Chou
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Stochastic Chaos in a Turbulent Swirling Flow [PDF]
Physical Review Letters, 2017 We report the experimental evidence of the existence of a random attractor in a fully developed turbulent swirling flow. By defining a global observable which tracks the asymmetry in the flux of angular momentum imparted to the flow, we can first reconstruct the associated turbulent attractor and then follow its route towards chaos.
Faranda, Davide +6 more
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Effect of swirl on fluctuation of pressure drop in a gas–liquid slug flow
Measurement: Sensors, 2020 Slug flow as one of the typical two-phase flow patterns occurs widely in industry. The fluctuating phenomenon in slug flow is harmful to the pipeline system and should be suppressed.
Wen Liu, Xiaofei Lv, Zhongchuang Zhao
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